Apple has issued a warning to Boot Camp users that their beta software is on track to expire this month.

The company's latest tech support posting for the software warns: "As indicated in the license agreement for Boot Camp Beta, the Boot Camp Beta program expires when Mac OS 10.5 Leopard becomes available publicly in October, 2007."

The note explains that the license to use Boot Camp Beta 1.2 or earlier expired on 30 September, requiring users to upgrade to Boot Camp 1.4, which will work a little longer.

The Boot Camp 1.4 license is set to expire when Mac OS X 10.5 is made available to the public. Apple has not yet disclosed a date for this release.

"To continue using Boot Camp at that time, upgrade to Mac OS X 10.5 Leopard," the company warns.

Previous reports have indicated Apple may release a version of Boot Camp for use with Mac OS X 10.4, but the company's existing technical support warning offers no information as to such future plans.